QLD Going to Court for Fraud - No Proof?

I am getting taken to court for four
fraud cases against my name.. I didn't do it but have no proof to say I haven't done it. They say I sold four different items took the money but never gave them the product. For four different people. I'm a 21 year old female with no other offences ever! I have never had any issues with the law. I'm a full time hard worker. What do you think my outcome of they say I'm guilty? Is it
jail time. I am under the worse stress you could think of. Thanks for your time.

They picked me up from my house took me back to the station and took my finger prints.. This has never happened to me.. And yes they have served me with a notice to go to court.
The people who got ripped off reported me.
There is no possible way for me to prove I didn't do it, it's obviously someone I know because they have all of my details.
Can't I just file to pay it back? I'd prefer that over jail time. I am a hard working full time worker. I would never do this!